HD Captioning issue…

Adobe Premiere Pro

HD Captioning issue…

Posted by Chris Borjis on March 14, 2014 at 11:41 pm

First off, I REALLY dig what adobe has done for us in the way of providing
a captioning capability in premiere. I no longer have to rely on a third party
or costly app for short form SD captioning.

I’m about to submit an HD captioned spot for Extreme Reach, they specify only an mpeg2 transport
stream for retaining the captioning data.

I did the 608 and 708 captions just above the video 1 track in premiere cc and they check
out when setting the caption previewer to 608 or 708 in the program monitor.

if I import that mpeg2 file BACK into premiere and play it the captions are not showing.

I Just now exported an OP1a .mxf and saw an option to EMBED captions in the file
instead of just the side car option normally there.

THAT WORKED! re-importing to premiere I see the captioning on track 2 and 3
and they do play.

But Extreme Reach requires the captioning in an mpeg2 TS container, not mxf.
I tried converting the mxf to mpeg TS but the captioning gets stripped out.

any ideas or suggestions?

David Nault replied 11 years, 6 months ago 3 Members · 5 Replies
5 Replies

Don Hertz
March 15, 2014 at 2:24 pm

Chris,

When Adobe first released this very useful captioning feature it supported Quicktime wrapped files only on export. Last fall they added support for MXF. I don’t know if it supports anything outside of those two containers yet. We export Quicktimes here and then take those into our Vantage transcodes which reads the embedded captions and re-inserts them into the MPEG 2 TS encode. Obviously a $20k Vantage system isn’t something everyone can just run out and buy. Last year I believe some of the third party lower cost encoders like Squeeze and Episode Pro started added caption support. I’m not sure what all they can do. Hoping to find out at NAB in a few weeks. You could give each a call to see if they’ll take either you embedded captions or a sidecar file and re-embed into an MPEG TS file.

Don Hertz
Chris Borjis
March 17, 2014 at 4:07 pm

Thanks Don,

That gives me a few things to try, will post when I find out.

At this point I’m just looking for a way to transcode that .mxf
into MpegTS while retaining the caption data.

I also asked Extreme Reach if they would just accept an .mxf
since they list adobe as a way of delivering the asset.
Chris Borjis
March 20, 2014 at 8:48 pm

So in the end Extreme Reach asked me to upload an HD Apple Pro Res file
to their site, then email them the .scc caption file for them to
create the transport stream.

the alternative was buying sorenson squeeze for $ 750 to create the mpeg2 transport
stream with captioning embedded from an OP1a .mxf created by premiere cc october update version.
Don Hertz
March 20, 2014 at 9:03 pm

Thanks for the update Chris. I thought that might be the case. It’s good to at least know Squeeze is now offering a solution. They seem to run sales all the time so maybe they’ll have a big NAB discount and it will be more affordable to pick up a copy and keep it around.
David Nault
October 19, 2014 at 2:59 pm

Hi Chris,

Have you ever found a low-cost solution to providing an embedded HD captioned file to Extreme Reach? I am needing to do this too and am struggling to find a low cost solution.

Would love to hear if you’ve made any progress with this?

Thanks,

David

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